Match-ignition composition



TUNITED'STATES PATENT OFFICE.

WILLIAM HEIEWOR'IH DIXON, OF LONDON, ENGLAND, ASSIGNOR TO THE DIAMONDMATCH COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

MATCH-IGNITION COMPOSITION.

N Drawing.

To all whom it may concern Be it known that I, WILLIAM HEPWORTH DIXON, asubject of the King of Great Britain, residing in London, England, haveinvented certain new and useful Improvements in Match-Ignition"Compositions, of which the followin is a specification.

The friction surface on a match box is made by applying to' the paperlabel, or Wrapper a suitable composition, the operation being performedafter the label has been pasted on the box.

By this invention a suitable friction com-- position is applied to thelabel or wrapper by a printing operation, before the label or wrapper ispasted onthe box. This operation may be performed at the same time thatthe letterpress or the like is' printed on the label. For'the purpose ofthe invention the composition is made up as a printing ink or printingcolor, the active constituent, such as amorphous phosphorus, beingincorporated withany suitable known printing composition.

Amorphous phosphorus,'however, is not so well adapted as are the usualprinting pigments for incorpora ion with a printing ink composition. Ihave found, for example,

that a composition ofsufiicient viscosity to be taken up b the maininking roller and containing. su cient amorphous phosphorus, does notleave the printing die readily, thus clogging the machine; it ispreferable, therefore, to thin the composition somewhat and to feed itby gravity to the main printing roller. To facilitate this feed thepresence of a solid of higher specific gravity than amorphous phosphorusis of advantage; as this weighting'material must take the place of someamorphous phosphorus I prefer to use lead peroxid which contributes tothe sensitiveness of the striking surface. I a The foregoingconsiderations have led to the following composition as suitable:

Parts by weight. Copal varnish 55 Alumina--. .30 Peroxid olead- 105Amorphous phosphorus 80 Oil of turpentine.

'ing' of the letterpress. separate printing roller placed in the ma--Specification of Letters Patent. P t te May 25, 2 Application filedOctober 11, 1919. Serial No. 330,115. I

added for the reason stated above; parafiin oil, raw linseed oil orresin oil may be substituted, but they do not dry so quickly.

In making the composition containing lead peroxid care should be takento dilute the amorphous phosphorus before it is mixed with the peroxid.A safe procedure is thoroughly to mix the amorphous phosphorus with thecopal varnish and then to add the peroxid of lead and other ingredicuts.The final mixture is .milled in an ordinary printers ink mill.

The composition is preferably printed on the paper in the same operationas the print- For this purpose a chine either before or after theletterpress printing mechanism, may-be used.

Having thus described the nature of the said invention and the bestmeans I know of carrying the same into practical effect, I c a1m:

1. A.match ignition composition comprising a known printing mediumhaving incorporated therewith a material adapted to .ignite a match byfriction. 2. A match ignition composition comprisingaknown printingmedium and amorphous phosphorus.

3. A match ignition composition comprising'a printing varnish, a'weighting material, amorphous phosphorus and a thinning agent. ,4. Amatch ignition composition comprising a printing varnish, lead peroxid,amorphous phosphorus and a thinning agent.

5. A match ignition composition comprising copal varnish, alumina,-peroxid of lead,

amorphous phosphorus.and oil of turpentine in about the proportionsspecified.

In testimony whereof I have signed my name to this specification.

.WILLIAM HE'PWORTH DIXON.

